Objective  To evaluate the effect of an informatization training program in professional staff on the promotion of First Aid by Your Side voluntary service initiated by Red Cross Society of China for providing a reference to the management and improvement of on-site emergency first aid voluntary services.

  Methods  Python web crawler technology was used to collect all information about the First Aid by Your Side voluntary service project released by the Chinese Red Cross Volunteer Website from January 11 through October 24, 2021. Considering one week training program partly on the utilization of National Red Cross Volunteer Service Information System (from May 17 to 23) as the intervention point and with the number of voluntary service projects released as the outcome variable, the changing trend in the number of voluntary service projects released within a total of 41 weeks before and after the informatization training program was analyzed with interrupted time series method.

  Results  Totally 5 847 voluntary service projects were released nationwide during the 41-week period, of which 3 486, 529 and 1832 projects were released in the eastern, central, and western region. Before the training program, the number of voluntary service projects released per week in the whole country, the eastern region and the western region increased by 8, 4 and 3, respectively; while, after the training program, the number of voluntary service projects released per week in the western region in the short run decreased by 28 compared with that before the training, but the weekly number of voluntary service project released nationwide increased by 2 in the long run compared with that before the training (both P＜0.05).

  Conclusion  Informatization training plays a certain role in promoting the management of First Aid by Your Side voluntary services. While more attention should be paid to giving timely guidance after the training and to the training in central region in the future.